Are these issues normal?

I've heard some games are havining issues with the new firmware 3.0 so that might be it. Sony seems to be looking into it

When I originally purchased Bioshock for the PS3, I couldn't get past the half-way point in the game without it freezing up and turning off. I even returned it for a different copy! So I would say that some of the Bioshock game copies might have issues.

In bioshock for PS3 I get some framerate drops and also when I kill a splicer they look choppy while they die,are these issues normal?quick_hurry

Yeah, I've had that a bit, but nothing serious and it didn't cause me any problems. It was very minor.